content of dynamically created iframe is empty

Question

On my localhost, I am using the following JavaScript to create an iframe with src, and add it to the document:

$(\'#preview\').html         


        

Answer 1

Yes the code is forbidden because of same origin policy. Read here

Suppose you own the domain http://www.example.com then you can probably have following results, when you call pages through iframes:

Compared URL                               Outcome  Reason
---------------------------------------------------------------------------------------------
http://www.example.com/dir/page.html       Success  Same protocol and host
http://www.example.com/dir2/other.html     Success  Same protocol and host
http://www.example.com:81/dir2/other.html  Failure  Same protocol and host but different port
https://www.example.com/dir2/other.html    Failure  Different protocol
http://en.example.com/dir2/other.html      Failure  Different host
http://example.com/dir2/other.html         Failure  Different host (exact match required)
http://v2.www.example.com/dir2/other.html  Failure  Different host (exact match required)

Now, you are calling google.com, which is a cross domain issue upon you. To get around such a problem, JSONP can help you out. It uses open script policy for